{"id":"F2006B02315","name":"AD/ALF/19 - Combustion Liner - Inspection","slug":"ad-alf-19-combustion-liner-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41545,"registerId":"commonwealth-F2006B02315-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nAllied Signal (Lycoming) Turbine Engines \\- ALF502 and LF507 Series","sortOrder":0},{"sectionNumber":"AD/ALF/19 Combustion Liner - Inspection ","sectionType":"part","heading":"AD/ALF/19 Combustion Liner - Inspection 1/2003","content":"# AD/ALF/19 Combustion Liner \\- Inspection 1/2003\n\nApplicability: Honeywell ALF502R and LF507 Series engines with combustion chamber liner part number 2-131-520-03 installed.\n\nRequirement: Carry out initial inspection, repetitive inspection and replacement of combustion chamber liner assemblies per the requirements of FAA AD 2002-22-06.\n\nNote: FAA AD 2002-22-06, Amdt 39-12931 refers.\n\nCompliance: As detailed in the requirement document with a revised effective date of 23 January 2003.\n\nThis Airworthiness Directive becomes effective on 23 January 2003.\n\nBackground: This directive is prompted by three reports of failure of combustion chamber liners resulting in burn through with potential for engine fires.\n\n![](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 28 November 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 December 2002.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements the FAA AD requirements for a defined set of engine models and a single part number. The source text does not indicate any expansion or narrowing beyond that original applicability; it adopts the FAA-prescribed inspections and replacement obligations with the stated effective date."},"complexity_factors":["Narrow applicability — only ALF502R and LF507 engines with liner PN 2-131-520-03 are affected","Procedural detail is outsourced — full inspection/replacement procedures are contained in FAA AD 2002-22-06 (external reference)","Safety-critical technical inspections and potential part replacement create operational and maintenance scheduling burdens","Repetitive inspection requirement increases ongoing compliance obligations and lifecycle costs for affected operators","Clear compliance date (23 January 2003) creates a firm implementation deadline but no staged or phased options in the source text"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Honeywell ALF502R and LF507 engines fitted with combustion chamber liner part number 2-131-520-03 to carry out initial and recurring inspections and replace liners as directed by FAA AD 2002‑22‑06. The directive became effective 23 January 2003. CASA says the measure responds to three reports of liner failure with burn-through and potential engine fires. Affected operators bear the inspection and replacement costs and must schedule recurring maintenance to meet the FAA-prescribed instructions."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific unsafe condition in specific engine models. It does not expand beyond the original safety purpose of preventing combustion liner failures."},"complexity_factors":["Very short document (approximately 250 words)","Only 1 defined applicability criterion (specific part number)","Single cross-reference to external FAA directive (AD 2002-22-06) — actual technical requirements contained there, not in this document","No nested conditions or exceptions within the directive itself","Straightforward compliance structure: inspect, repeat inspection, replace if necessary","No interpretation section or defined terms"],"plain_english_summary":"This mandatory CASA Airworthiness Directive orders inspections and, if needed, replacement of combustion chamber liner PN 2-131-520-03 on certain Honeywell/Lycoming ALF502R and LF507 turbine engines, following FAA AD 2002-22-06. It affects operators of aircraft fitted with these engines. The action responds to three reported liner burn-throughs that risk engine fires; compliance is required to legally operate in Australian airspace. Effective 23 January 2003."}},"importantCases":[],"_links":{"self":"/api/acts/ad-alf-19-combustion-liner-inspection","history":"/api/acts/ad-alf-19-combustion-liner-inspection/history","analysis":"/api/acts/ad-alf-19-combustion-liner-inspection/analysis","conflicts":"/api/acts/ad-alf-19-combustion-liner-inspection/conflicts","importantCases":"/api/acts/ad-alf-19-combustion-liner-inspection/important-cases","documents":"/api/acts/ad-alf-19-combustion-liner-inspection/documents"}}